Paper-cutting machine.



No. 680,655. Patented Aug. I3, I90I N GRAY, IR PAPER CUTTING MACHINE.

(Apph shan filed May 1B 1900) (No Model.) 5`Svhee1s-Sheet l.

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Patented Aug. I3, 190|.

N.. GRAY, 1a. Y PAPER CUTTING MACHINE.

(Application led May 18, 1900.) (No Model.) l 5 Sheets-Sheet 2.

uw e lll* 5 No. 680,655. Patented Aug. I3, |90I.

N. GRAY, 1n. PAPER currmc MAcHlNE.

(Application Sled' May 18, 1900.)

5 Sheets-Sheet 3.

(No Model.)

No. 680,655. Patented Aug. 13, 190|.

, N. GRAY, 1R.

PAPER CUTTING MACHINE.

(Applicatinnled May 18, 1900.) (N0 MJdL) 5 Sheets-Sheet 4.

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No. 680,655. Patented Aug. ls, |901.

N. GRAY, JR. PAPER CUTTING MACHINE.

(Application filed May 18, 1900.) (No Model.) 5 Sheets-Sheet 5 UNITEDSTATES PATENT OEETCE.

NIEL GRAY, JR., OF OSWEGO, NEV YORK, ASSIGNOR TO OSWEGO MACHINE tW'ORKS, OF SAME PLACE.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 680,655, dated August13, 1901.

Application filed May 18, 1900. Serial No. 17,125. (No model.)

To all whom it may concern:

, Be it known that I, NIEL GRAY, Jr., acitizen of the United States,residing at Oswego, in the county of Oswego and State of New York, haveinvented certain new and useful Improvements in Paper-Cutting Machines;and, I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to paper-cutting maehines; and it has for itsobject to provide a machine the working partsof which are simple anddurable and adapted to all the different kinds of work to which suchmachines are applied; and it consists of the parts and combinations ofparts hereinafter` described and claimed.

In the accompanying drawings, forming a part of this specication, Figure1 is a perspective view of the rear end of the machine. Fig. 1a is aplan View of the machine with the bed-plate or table removed and havingcertain of the working parts in section; Fig.

the clamp by hand; Fig. 8, a similar view of the said means, showing itin its inoperative position; Fig. 9, a detail view of the device foradjusting the means for throwing the machine into operation; and Fig.10, a vertical section on the line y y, Fig. 9.

Similar numerals refer to similar parts throughout all the views.

The frame of my machine consists of the side pieces 2, connectedtogether by the front and rear beams 3, and the centrally-arrangedlongitudinal beam 4, connecting the said front and rear beams 3, thewhole resting on asolidly-cast base-plate 5, which provides for theinequalities of foundations. In the side pieces 2 are formed ,thevertically-extending pockets 6, said pockets being located at pointsnear the front edge of the side pieces andl directly opposite eachother, as best shown in Fig. la. The pockets 6 preferably extend thefull length or height of the side pieces, and a slot 7 is formed in thecontiguous walls thereof, in which the strap-bars 8 work and throughwhich the arms 9 of brackets 10, secured to the top of the clamp 1l ateach end thereof, extend. (See Fig. 4.) The ends of the arms 9 areenlarged and perforated to receive the rods 13, arranged in saidpockets, and which extend up and through caps 14 and are held in placeby nuts 15, screwed onto the reduced threaded ends of said rods.Ahand-wheel16 is provided for each rod, whereby it may be adjusted inorder to increase or decrease the tension of the springs 17, surroundingsaid rods within the pockets. The lower ends of the rods 13 are eachprovided with a fixed washer 18, on which the lower ends of the springs17 rest, and where, as is shown, a number of springs 17 are employed, asis the preferred arrangement, they are separated by washers 19,arrangedloosely on the rod 13, and the upper end of the topl spring ofthe series bears against the enlarged end of the arm 9 of thev bracket.A

To the strap-bars 8, which are secured at their upper ends to the endsof the clamp, rack-plates 20 are secured, which engage with pinions 2l,keyed to a shaft 22, having its bearings in the side frames, whereby theclamp is brought down upon the paper on the table or bed-plate of theAmachine when the said shaft is revolved in one direction. On the shaft22 is keyed a gear-'wheel 23, which is engaged by a gear-wheel 24,forming a part of a friction device secured to a shaft 25, having itsbearings in the side frames and on the central beam 4 of the frame.

The friction device consists of the hub or sleeve 26, formed with aflange 27, said hub or sleeve being keyed to said shaft 25, thegear-ring 24, fitted on said sleeve, the disk 28, having a flange 29also fitted on said sleeve, the pressure-adjusting nut 30, screwed ontothe end of said sleeve, and the interposed friction-washers 31. (SeeFigs. 5 and 6.) The nut 30 may be turned by a spanner until therequisite pressure has been produced, and is prevented from workingloose by a bolt 32, inserted through a slot 33, formed in a projectionIOO 34 from a locking-ring 35, which is secured to the inner face of thenut 30 and entering one of a series of perforations 36, formed in theflange 29 of the disk 28, thereby locking the nut in its adjustedposition. The projection 34 also serves as an index of the approximatepressure produced, so that the operator may to a certain extent gage thepressure it is necessary to use on the different kinds of work to whichthe machine may be applied.-

The screwing up of the nut carries with it the ring 35, and the degreeof pressure is thus approximately ascertained according to the positionoccupied by the projection 34, and the bolt 32 locks it in its adjustedposition.

A gear 36, which forms the outside ring of a friction-clutch 62 (similarto the Edmeston clutch described and illustrated on page 111, Figs. 279and 280, llifanual of Machine Drawying and Design, by Low du Bevis) onshaft 25 meshes vwith a pinion 37 on a shaft 38, and the latter isdriven by a gear 39 thereon in mesh with a gear 40, loosely mounted onthe main shaft 41, which is connected through the pulleys 42 with thepower and its motion steadied by the fly-wheel 43.

A suitable clutch mechanism 45 is arranged on the shaft 4l to engage thegear 40 in order to start the machine, said clutch being thrown in bymeans of a lever 46, fast on the end of a shaft 47, journaledlongitudinally of the machine in the posts 48 at front and rear of theframe, and provided with a crankhandle 49 at the front end, said leverbeing suitably connected to said clutch, and the machine isautomatically stopped after the crank-shaft 50 has made one revolution,and thus brought the knife-bar 5l to its raised position, by means of ashifter-rodI 52, connected to a lever 53, secured on the shaft 47, saidrod 52 being moved longitudinally by a cam-faced knocker 54.l projectingfrom the side of a gear-wheel 55 on one end of the crank-shaft 50 andengaging a roller 56 on the end of said rod 52. The knife-bar isconnected to rods 57 at each end by ball-bearings, and said rods areconnected to cranks 58 on the ends of the shaft 50 by ball-bearings, anda shear-cutting movement is imparted to said knife-bar by the bar 59,connected to the top cross-piece 60 and to said knife-bar. Thecrank-shaft 50 is driven by means ofa pinion 6l on shaft 38 meshing withthe gear-Wheel 55. The gear 36 is thrown into operation by a forkedlever 63 on a shaft 64, journaled in bearings in the rear and frontbeams of the frame, which engage the spool 72 of the clutch 62, saidshaft being turned on its axis by the arms 65, projecting from a hubsecured to said shaft, and one of which arms projects upwardly and theother downwardly from said shaft. The upper arm is connected to a rod66, which is moved by a cam-faced knocker 67 on gear-wheel 55, whichengages a roller 68, journaled in the end of said arm, and the lower arm65 is operated by a similar rod 69, carrying a roller 70, Whichisengaged by a cam-faced knocker 7l on gear-wheel '55. The knockers are soarranged on the gear-Wheels 55V that knocker 67 engages rod 66 as. soonas said gear-Wheel starts and throws in the spool 72 of the clutch forcoupling gear 36, which revolves shaft 25 and through gears 24 and 23imparts motion to shaft 22, thus operating pinions 2l and strap-bars 8to bring the clamp down upon the work, and as soon as said gear-Wheel 55makes a one-half. revolution, the knife then being at the bottom of itsstroke, the knocker 71 engages rod 69 and throws ont the spool 72,thereby uncoupling gear 36 and stopping and freeing the shaftsl 25 and22, and the springs 17 then come into play to raise the clamp instantlyto its raised or top position. The clutch 45 is still engaged, however,and continues to drive gear-Wheel 55 around until the knocker 54 engagesrod 52 and throws the clutch 45 out and stops the machine. The clamp maybe brought down by hand, when desired, by means of the hand-wheel 73,secured on the end of a worm-shaft 74, journaled in a bracket 75,pivoted to the side of the frame and formed with an arc-shaped slot 76,through which a guidestud 77 extends from the frame to limit themovement of the bracket. At the end of the worm-shaft a pin 78 issecured, which is adapted to enter a socket formed in the end of aplunger 79, located in a barrel 80, secured to the frame of the machine,and having a stem 8l projecting through the end of the barrel andprovided with a knob 82, whereby said plunger may be moved against thepressure of aspring 83, surrounding said stem within the barrel. Theworm-shaf t engages a worm-wheel 84,fast on the shaft 22. (See detailviews, Figs. 7 and 8.) When it is desired to operate the clampbyhand,the knob 82 is pulled outward, thus drawing the plunger into thebarrel and permitting the worm-shaft, which when not in use rests on theend of the plunger, to drop down and into engagement with the worm-wheel84, in which position itis held by the plunger, which as soon as it isreleased by the operator is forced over the pin 78, as shown in Fig. 7.To release the worm-shaft, it is only necessary to pullout the knob,when the shaft may be titled, and then upon releasing the plunger thespring throws it out, so that it acts as a support for the'end of theworm-shaft. Also in order to prevent knocker 67 engaging rod 6G when theclamp is being hand-operated the said rod is formed of two parts,consisting of a sleeve 85 and a bar 89, whereby it may be shortened, soas to remove the'roller 68 out of the path of the said knocker 67.

As best shown in Figs. 9 and lO, the rod or bar 89 is formed with alongitudinal groove 86, terminating in recesses 87 at each end, intowhich the end of a bolt 88 enters through an opening in the sleeve 85 tolock the bar or rod in its adjusting position, while the groove servesto prevent the rod turning in the sleeve lOO IIO

when the bolt is withdrawn from the recesses by engaging the reduced endof said bolt while adjustment is being made. The clamp may also bebrought down by a foot-treadle, consisting of the levers 89, pivoted tothe rear end of the frame and connected at the front thereof by a bar90, said bar being secured to bars or rods 91, which enter socketsformed in the outer ends of the levers 89, so as to be adjustabletherein. A bolt 92 serves to hold the bars or rods 91 in their adjustedpositions.

The rack-bars 8, as shown in Fig. 3, extend nearly to the bottom of theframe and are provided With pins 93, over which a slot 94 in the levers89 fit. The treadle may be so balanced as to put less work on theclamp-lifting springs.

'Io mitigate the violence of the blow which results from the quickreturn of the clamp to the top by the springs, suitable buffers or stopsmay be provided. The guide-bars 96, forming the front support for theknife-bar, are removable in order to provide for the wear of theknife-bar or its Ways in the frames. The back gage 95 may be adjusted bya cable, as shown, or by a screw-rod or any other preferred means.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination in a paper-cutting Inachine of a clamp havingbrackets at each end thereof, springs arranged to be compressed by thedescent of said clamp, and means for lowering said clamp to the paperand to automatically release the pressure thereon, whereby the springsmay return the clamp to its raised position.

2. The combination, in a paper-cutting machine, of a clamp, means forlowering said clamp to the paper, brackets projecting from said clamp,and springs arranged in pockets in the frame for returning said clamp toits raised position.

3. The combination, in a paper-cutting machine, of a frame havingvertical pockets therein, springs arranged in said pockets, a clamp,brackets projecting from said clamp and engaging said springs, rack-barssecured to said clamp, a shaft, pinions fast on said shaft and engagingsaid rack-bars, and means for rotating said shaft.

4. The combination, in a paper-cutting machine,of a frame having pocketsformed therein, rods arranged in said pockets, springs surrounding saidrods, means for adjusting the tension of the springs, a clamp, bracketsprojecting from said clamp and engaging said springs, and means forlowering said clamp to the paper.

5. The combination, in a paper-cutting machine, of a frame havingslotted pockets formed therein, springs arranged in said pockets, aclamp, brackets projecting from said clamp and engaging said springs,rack-bars secured to said clamp, and Working in the slots of thepockets, a shaft, pinions fast on said shaft and engaging saidrack-bars, and

means for automatically connecting said shaft with the driving power.

G. The combination, in a paper-cutting machine, of a hand operatingdevice for lowering the clamp to the vpaper comprising a pivotedbracket, a worm-shaft having a reduced end journaled to said bracket, abarrel fixed to the frame, and a spring-held plunger having a socket toreceive the reduced end of the worm-shaft.

7. The combination, ina paper-cutting machine, of a hand operatingdevice for lowering the clamp to the paper, consisting of a pivotedbracket, means for limiting the movement of the bracket, a worm-shaftjournaled in the bracket, and havinga reduced end, a

barrel fixed to the frame, a socketed plunger having a stem arranged insaid barrel, a spring pressing against said plunger, and a knob for saidstem.

S. A friction device for exerting pressure on'the clamps ofpaper-cutting machines, consistin g of a sleeve having screw-threads atone end and a flange at the other end, a flanged disk'havingperforations around its periphery, a gear-ring arranged between saiddisk and the flange of said ring-gear, a tighteningnut run on saidsleeve, a locking-ring having a slotted projection secured to the innerface of said nut, and a bolt for locking said nut in its adjustedvposition.

9. The combination, in a paper-cutting machine, of a clamp, rack-barsconnected to said clamp, a shaft, pinions engaging said rackbars, agear-Wheel on said shaft, a countershaft carrying afriction devicehaving a rin ggear engaging said gear-wheel, a clutch for coupling saidlast-named shaft to the power,- al longitudinal shaft,rock levers orarms on said longitudinal shaft,shifterrods connected to said arms, agear-wheel and knockers on said wheel for engaging said shifter-rods.

l0. The combination, in a paper-cutting machine, of a main shaft, agear-wheel loosely mounted on said shaft, a clutch arranged on saidshaft, a shaft arranged longitudinal of and journaled in bearings ontheframe of the machine, means for connecting said shaft and the clutch, alever or arm projecting from said shaft, a shifter-rod connected at oneend to said lever or arm for turning said shaft on its axis, acrank-shaft, and a gear-wheel having a cam-faced knocker xed on thecrank-shaft for imparting a longitudinal movement to the shifter-rod.

ll. A shifter-rod consisting of a sleeve, a rod having a longitudinalgroove and recesses at the ends of said groove, a bolt for securing saidsleeve and rod together, and a roller journaled in the end of said rod.

In testimony whereof I affix my signature in presence of two witnesses.

NIEL GRAY, JR.

Witnesses:

F. E. SWEETLAND, M. S. HAMMER.

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